JDZ(X)(9,10)-3,6,10 type Voltage Transformer

The JDZ(X)(9,10)-3, 6, 10 Type Voltage Transformer is a high-performance, cast epoxy resin indoor instrument transformer designed for precise measurement and protection in medium-voltage applications. It offers multiple standard voltage ratios (e.g., 10/0.1 kV) and features high insulation levels (up to 75kV). With accuracy classes from 0.2 to 3 and a robust short-term power output up to 1000VA, it complies with the GB/T 20840.3-2013 standard, ensuring reliability and safety in electrical distribution systems.

Product Details

Product Functions

◆Voltage Transformation and Measurement: Precisely steps down high system voltages to standardized, safe low voltages for accurate metering by connected instruments.

◆Electrical Isolation and Protection: Provides essential galvanic isolation between the high-voltage primary circuit and low-voltage secondary control/protection circuits, safeguarding personnel and equipment.

◆Signal Provision for Relays: Delivers reliable voltage signals to protective relays and control systems, enabling functions like over-voltage/under-voltage protection, synchronization, and system monitoring.

◆Power Supply for Ancillary Devices: Capable of supplying short-term power (300VA to 1000VA) to connected devices within its rated specifications during normal and transient conditions.

Applicable Environment

◇Primary Installation: Designed specifically for indoor use within enclosed electrical switchgear such as metal-clad switchgear, ring main units (RMUs), compact substations, and distribution cabinets.

◇System Voltage Level: Ideal for medium-voltage distribution networks, commonly applied in systems with rated voltages of 3kV, 6kV, and 10kV.

◇Setting Requirements: Must be installed in a clean, dry, and well-ventilated environment to maintain its epoxy resin insulation integrity. It is not suitable for outdoor or harsh environments with excessive moisture, pollution, or corrosive substances.

Product Highlights

◆High Precision & Dual Rating: Offers excellent measurement accuracy with a 0.2 accuracy class for metering (15VA) and a protection class 3 rating (300VA), making it versatile for both precision measurement and robust protection circuit applications.

◆Superior Insulation & Safety: Features a full cast epoxy resin construction providing exceptional mechanical strength, moisture resistance, and partial discharge resistance. Its high insulation level (12/42/75 kV) ensures long-term reliability and safety.

◆Robust Short-Term Capacity: Engineered with a high short-term thermal output capacity (up to 1000VA), allowing it to withstand significant overloads during fault conditions or switching events without damage.

◆Standard Compliance & Reliability: Manufactured in strict compliance with the GB/T 20840.3-2013 standard, guaranteeing international-grade performance, interoperability, and consistent quality.

◆Flexible Configuration: The JDZ(X) series designation indicates variants (like models 9 or 10) for different applications, available for common system voltages (3, 6, 10kV), providing tailored solutions for various project needs.